* Filter out 100-percent of all UVA, UVB, UVC and harmful blue light, maximum protection against sun, wind and side impact

* Compatible format: MP3, WMA

* Standard USB port: USB 2.0 (full speed)

* Integrated USB driver, U disk flashing memory function

* Product size: 160 x 153 x 38mm

* Power: 3.7V 150mA/USB 5V

•Signal-to-noise ratio:87.2dB

•Playback Modes:Random play

•External hard drive function Supported

•Charging Time: 3hours continaully

•Battery tape/capacity: Built-in Lithium lon Polymenr/3.7v,150mAh

•Audio Additional features:Auto-power off

•Earphones type: Binaural

•Mfr estimated battery life: 6hours continuous

•Maximum imput power rating:5VDC, 150mA

•Voice output power:55mW

•Voice output frequency:20Hz-20Khz

•earphone impendance:16 Ω*2

This is a superb and fashionable sunglasses with MP3. It is amazing that no external power needed, just connect it directly with your MP3 player then you can listen Music while walking.Superb sound through earpiece which fits snugly in your ears and fold out as required. Sunglasses fold up for normal day or night-viewing while maintaining music on-the-go

Features;Lensesimported Polarized lenses canprotect you from UV400.

Easy opperationSoft silica gel easy to control

LED light directionIn different condition,the light will appear different color.

The lense can up-turning and changeable. You can change the lenses to different colors if you have many colors. So one glass, different style.